S
M
T
W
T
F
S
26
95°
75°
27
95°
75°
28
96°
71°
29
96°
73°
30
95°
74°
31
96°
73°
1
92°
66°
2
97°
74°
3
89°
73°
4
92°
74°
5
Hist. Avg.
92°
69°
6
Hist. Avg.
92°
69°
7
Hist. Avg.
92°
69°
8
Hist. Avg.
92°
69°
9
Hist. Avg.
92°
69°
10
Hist. Avg.
92°
69°
11
Hist. Avg.
92°
69°
12
Hist. Avg.
92°
69°
13
Hist. Avg.
92°
68°
14
Hist. Avg.
92°
68°
15
Hist. Avg.
92°
68°
16
Hist. Avg.
92°
68°
17
Hist. Avg.
92°
68°
18
Hist. Avg.
91°
68°
19
Hist. Avg.
91°
67°
20
Hist. Avg.
91°
67°
21
Hist. Avg.
91°
67°
22
Hist. Avg.
91°
67°
23
Hist. Avg.
90°
66°
24
Hist. Avg.
90°
66°
25
Hist. Avg.
90°
66°
26
Hist. Avg.
90°
66°
27
Hist. Avg.
90°
66°
28
Hist. Avg.
89°
65°
29
Hist. Avg.
89°
65°
30
Hist. Avg.
89°
65°
31
Hist. Avg.
88°
64°
1
Hist. Avg.
88°
64°
2
Hist. Avg.
88°
64°
3
Hist. Avg.
87°
64°
4
Hist. Avg.
87°
63°
5
Hist. Avg.
87°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dennis
Dennis's August 2026 forecast shows daily high temperatures ranging from 89° to 97°, with overnight lows between 66° and 75°. The average high for August is 94° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Dennis. See also: September | October | November.
